kir said:But I just don't get a willy-lift on swinging ships!
I always get a willy-lift when swinging (just thought I'd add that to UC's "when quoting goes wrong" list)
It's the change between the backwards direction and moving forwards, it's the shift of forces from forwards to backwards (and vice-versa). To get it, sit up straight, and try with your head in various backwards angled positions, or even exagerating the swing by tilting your head back at the swings zenith.